Home › Manufacturers › Siemens › 3RW4445-6BC45

Siemens

Siemens SIRIUS 3RW4445 Soft Starter - Phased Out

Siemens SIRIUS 3RW4445 soft starter, 313A (500V).

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RW4445-6BC45

Standard Rating (500V) 313 A, 200 kW

Inside-Delta Rating 542 A, 355 kW

Control Voltage 230 V AC

Main Voltage 400-600 V AC

Get a price for 3RW4445-6BC45

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

Controlled motor starting Reduces mechanical stress Reduces inrush current Operates at 500V standard Inside-delta connection capability

Product description

The Siemens SIRIUS 3RW4445-6BC45 is a soft starter designed for controlled motor acceleration. At 500V and 40°C standard operation, it handles 313A and provides 200kW motor power. For inside-delta connections, it supports 542A and 355kW. The device operates on 400-600V AC main voltage and features 230V AC control voltage with screw terminals.

This soft starter is intended for applications requiring smooth and controlled starting of electric motors, reducing mechanical stress on machinery and electrical inrush current. It's suitable for various industrial drives in manufacturing, pumps, fans, and conveyors.

Please note that this product is phased out. Its successor is the SIRIUS 3RW5 series, with the preferred replacement being the 3RW5545-6HA16. Stanlo Automation, a veteran-owned surplus distributor, can help you source this legacy part or guide you to its modern replacement.

Technical specifications

Standard Rating (500V)	313 A, 200 kW
Inside-Delta Rating	542 A, 355 kW
Control Voltage	230 V AC
Main Voltage	400-600 V AC
Terminals	Screw
Status	Phased Out
Successor	3RW5545-6HA16

Common applications

Motor control

Pump control

Fan control

Conveyor systems

Industrial machinery

General motor starting

Compatible systems

AC induction motors 400-600V AC power systems

Also known as

Siemens SIRIUS 3RW4445, 3RW4445-6BC45 Siemens

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RW5545-6HA16. It is designed to provide similar motor starting functionality.

Technical note

Expert tip

This soft starter is marked as phased out; ensure compatibility and consider the recommended successor (3RW5545-6HA16) for new installations or extensive replacements.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What is the current rating for the Siemens 3RW4445-6BC45 soft starter in standard 500V operation?

In standard operation at 500V and 40°C, the Siemens SIRIUS 3RW4445-6BC45 soft starter has a current rating of 313 A. It is designed to provide controlled starting for motors up to 200 kW at this voltage.